单项选择题

In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.

A.lower；igher
B.maximum；higher
C.predetermined minimum；higher
D.predetermined maximum；lower

相关考题

When the power is shut off, the wire（）A.becomes slackB....

单项选择题When the power is shut off, the wire（）

A.becomes slack
B.can not be paid out unless the brake is overhauled or recover wire unless manually operated
C.will be let out because the brake is out of work
D.may be pay out due to no power

For a flash type evaporator, a demister is located the ...

单项选择题For a flash type evaporator, a demister is located the condenser（）

A.After
B.before
C.inside
D.outside

For a flash type evaporator, the seawater heater will h...

单项选择题For a flash type evaporator, the seawater heater will have to maintain a enough temperature to minimize scale formation（）

A.lower
B.higher
C.low
D.high

船舶电气与船舶安全

In an automatic mooring winches, the wire is paid off the barrel at（） a tension and is recovered at（）tension.